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post #1 of 2 (permalink) Old 03-22-2019, 06:16 AM Thread Starter
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high flow cats

so my cats have been getting smelly on hard acceleration. Im thinking replacing them with high flow cats and throwing in an x pipe. maybe even delete 3rd cat. Has anyone done this? would I need a tune for high flow cats and 3rd cat delete?
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post #2 of 2 (permalink) Old 03-22-2019, 09:44 AM
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On my 1995 4.6 I installed, so called, high flow cats, deleted the third cat, and the resonator, installed an X-pipe, 2 1/2"mandrel bent tubing and performance mufflers. The car ran great, and no tune was needed. Also eliminated the Y-pipe and

About a year later I read this article. https://www.catalyticconverter.org/n...erter-&News=89


Clearing Up the Myth About High Flow Catalytic Converters
Is there really such a thing as a High Flow or Performance Catalytic Converter?
Read the following story and you might be surprised!

Do you realize you were just passed by a NASCAR? I didn't think so.

Last edited by Tbird Bob; 03-22-2019 at 09:51 AM.
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